Log In Log In  |  Checkout   |  142 item(s)
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
4 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 706, Membrane Filter Casing Housing Assembly
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
4 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 913, 5th stage inline carbon filter (every 12 months)
5 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
5 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 578, TDS Water Quality Meter tds-3
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x bulksf05, Koolermax Sediment Filter
2 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
4 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x bulk818, DI resin refill bags Di-Ionization media
1 x *Discontinued* RO585ERP
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x Parts, Ro Water System Installation Parts Bag 1/4"
5 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x *Discontinued* RD106
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 723, Feed Water Adapter with Ball Valve
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x 720, Feed Water Adapter with Needle Valve
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 719, Drain Saddle Clamp / Valve
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 565, Digital Pressure Gauge Tester Monitor
2 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x *Discontinued* RO6ALK
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G

View Cart$6,569.15
Specials Log InCreate Account Checkout  Shopping Cart142 item(s)
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
4 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 706, Membrane Filter Casing Housing Assembly
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
4 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 913, 5th stage inline carbon filter (every 12 months)
5 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
5 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 578, TDS Water Quality Meter tds-3
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x bulksf05, Koolermax Sediment Filter
2 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
4 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x bulk818, DI resin refill bags Di-Ionization media
1 x *Discontinued* RO585ERP
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x Parts, Ro Water System Installation Parts Bag 1/4"
5 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x *Discontinued* RD106
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 723, Feed Water Adapter with Ball Valve
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x 720, Feed Water Adapter with Needle Valve
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 719, Drain Saddle Clamp / Valve
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 565, Digital Pressure Gauge Tester Monitor
2 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x *Discontinued* RO6ALK
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G

View Cart$6,569.15

ATU TEE Union Connector Quick Connect QC Fitting [ATU]

$3.50

ATU TEE Union Connector Quick Connect QC Fitting



* ATU TEE Union Connector, Quick Connect

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter. First number is Tee double side and second number is the single side. (Pipe sizes can be confusing even for the experienced user. Pipe size is not the actual outside or inside diameter of the pipe but is the industry accepted designation. If you have any question please email us first.)
* 1/4" Tube OD x 1/4" Tube OD ATU0404
* 3/8" Tube OD x 1/4" Tube OD ATU0604
* 3/8" Tube OD x 3/8" Tube OD ATU0606
* 1/2" Tube OD x 3/8" Tube OD ATU0706
* 1/2" Tube OD x 1/2" Tube OD ATU0707


* Water & foods use: Products are manufactured from safe, non-toxic materials meeting the requirements of the US FDA, ERAS, ANSI/NSF-51,61, and SK Zert. Our products are widely used in water purification, food/beverage, and pneumatic systems.

* Function & Quality: Provides quick and convenient assembly-saving time & expense.

* Collet Design: Our unique oval collet design is superior and more practical, and is an improvement welcomed by our world wide customers in all industries.

* Additional Applications: Beyond water and food use, fittings can be used with air, gases, vacuum, & liquids. All connections can be assembled & disassembled repeatedly. A broad range of sizes covers a broad scope of applications.

* We carry different fittings in variation of sizes: 1/4", 3/8", or 1/2" adapters, connectors, fittings, or valves.  Most are not listed online, to avoid confusion to majority of RO system customers.  

* Send us a message with specification, intended application, and image of your setup or old fitting  to check if we have what you need. 

Available Options:

Size Combination:

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